1 year post mini tummy tuck, rectus reconstruction and liposuction - What could be causing changes in sensation? (photos)

Healing following any kind of surgery takes a minimum of one year and in terms of sensation can take up to two years.

Sensory nerves however take up to two years to completely regenerate and even then it may be incomplete. If your symptoms are tingling, minor electric shocks, or sensitivity while clothes touching the skin you are experiencing what is called paresthesias. This is a sign that the nerves are waking up and that you should have at least partial return of sensation.
Treatment of paresthesias is simple and supportive in nature. If they happen to be severe then there are medications that can help with this nerve pain. The simplest treatment is called desensitization. This involves re educating your brain about the sensory inputs you're getting. One way to desensitize the skin is to use a baby soft hair brush and gently glide the bristles over the skin several times a day. Items with different textures are then employed such as a wash cloth, rice, sand et cetera.

Medications can be used to reduce the discomfort of nerve regeneration include gabapentin and amitriptyline both of which can be sedating and are typically given before bedtime. Another medication available is called Lyrica which is more expensive.

There is a small possibility, if the pain is very localized to one spot only, that you've developed a neuroma which is essentially a ball of nerve endings that have grown but have been unable to reattach to the skin or nerve receptors and when stimulated is quite painful. This is determined merely on physical exam by the presence of what's called Tinel sign. This is elucidated by lightly tapping on the point of maximal tenderness which will elicit an electric shock type discomfort. A minor surgical procedure or injection can usually fix this.